In order to write the IPA symbols, I cut and paste (I write it in a Word document, with the font SILDoulos, which is specific for IPA). But even cutting and pasting doesn't allow to see the IPA symbols in a lot of forums.

Yesterday, while editing my post about Eilwen, I saw that the program converted the IPA symbols in codes (for instance "e" was transformed in "& # 601 ;" [without spaces]), so there is another way to write the symbols, but I don't know the equivalences yet.